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Reactive Collisions in Quadrupole Cells. 7: Characterization of C 5 H 8 Isomers by Reaction with Metal Ions
Author(s) -
Ni Jinsong,
Harrison Alex G.
Publication year - 1996
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(19960131)10:2<220::aid-rcm467>3.0.co;2-3
Subject(s) - chemistry , ion , metal ions in aqueous solution , mass spectrometry , quadrupole , metal , mass spectrum , reactivity (psychology) , quadrupole mass analyzer , analytical chemistry (journal) , organic chemistry , atomic physics , physics , medicine , alternative medicine , chromatography , pathology
The reactions of the singly charged transition metal ions Sc + through Cu + with six acyclic C 5 H 8 isomers have been studied. The metal ions, produced by fast‐atom bombardment of the solid metal chlorides, were mass‐selected by the BE stage of a hybrid BEqQ mass spectrometer and introduced at low incident ion energies into the quadrupole collision cell to react with the neutral C 5 H 8 compound in the cell. The reaction products were analyzed by scanning the final quadrupole. Cr + , Mn + , Ni + and Cu + reacted primarily by clustering to give C 5 H 8 M + and (C 5 H 8 ) 2 M + ions. Fe + and Co + showed both cluster ions and low yields of metal‐containing fragment ions. Sc + , Ti + and V + showed a high reactivity with the C 5 H 8 isomers and gave a variety of products ranging from CH 4 M + , C 2 H 2 M + , C 3 H 4 M + and C 5 H 6 M + to higher‐mass products resulting from further reactions of these primary products. These latter three metal ions give distinctly different spectra with each of the C 5 H 8 isomers 1‐pentyne, 2‐pentyne, 1,3‐pentadiene, 1,4‐pentadiene, 2‐methyl‐1,3‐butadiene and 3‐methyl‐1,2‐butadiene, thus allowing the isomers to be differentiated.